After several failed experiments (my loss your gain) I am using 2 of Thunderstruck'
Ideally - figure out your max amp draw then build for 150% of that - so on my boat 20amps is about max (water pressure, lights, sumps) - I should ideally have 3 ganged together for N+1 redundency. They are so cheap (~$25) as to be nearly disposable so carry a spare. The other cool thing to think about is running a +48V "backbone" and converting locally where the power is needed. I built up a breadboard with a +48 bar, and a dual-bus +-12V and then connected the -12V and -48V.
The downside to these units is they can't charge a 12V battery as they put out exactly 12V.
I have lost a couple in playing around - one where I probably reversed the polarity the other where I am somewhat suspicious that back-emf from a fan got to it. In both cases they got real hot and a cap popped.
Anyway, been running with these for a couple of months now and no troubles.
-Keith
--- In electricboats@
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> I have a columbia 36 that I have converted to electric and I want to add a 48 to 12 volt dc to dc converter -- does anyone have any recommendations as to brand or where to get etc? I had been using one bank to power my motor and one bank for house but I would rather increase my range and just pull house of of the 48 volt bank.
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> Thanks
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